CA2059507A1 - Method and apparatus for exploring subsoil involving the emission of a series of seismic pulses - Google Patents
Method and apparatus for exploring subsoil involving the emission of a series of seismic pulsesInfo
- Publication number
- CA2059507A1 CA2059507A1 CA002059507A CA2059507A CA2059507A1 CA 2059507 A1 CA2059507 A1 CA 2059507A1 CA 002059507 A CA002059507 A CA 002059507A CA 2059507 A CA2059507 A CA 2059507A CA 2059507 A1 CA2059507 A1 CA 2059507A1
- Authority
- CA
- Canada
- Prior art keywords
- signals
- reception system
- transmitted
- subsoil
- seismic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/40—Seismology; Seismic or acoustic prospecting or detecting specially adapted for well-logging
- G01V1/42—Seismology; Seismic or acoustic prospecting or detecting specially adapted for well-logging using generators in one well and receivers elsewhere or vice versa
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/28—Processing seismic data, e.g. analysis, for interpretation, for correction
- G01V1/36—Effecting static or dynamic corrections on records, e.g. correcting spread; Correlating seismic signals; Eliminating effects of unwanted energy
- G01V1/37—Effecting static or dynamic corrections on records, e.g. correcting spread; Correlating seismic signals; Eliminating effects of unwanted energy specially adapted for seismic systems using continuous agitation of the ground, e.g. using pulse compression of frequency swept signals for enhancement of received signals
- G01V1/375—Correlating received seismic signals with the emitted source signal
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V2210/00—Details of seismic processing or analysis
- G01V2210/10—Aspects of acoustic signal generation or detection
- G01V2210/16—Survey configurations
- G01V2210/161—Vertical seismic profiling [VSP]
Abstract
: On transmet dans le sol des impulsions sismiques réparties dans le temps de façon irrégulière (suivant un code aléatoire ou pseudo-aléatoire par exemple) et on capte par un système de réception les ondes directes et celles renvoyées par les discontinuités du sous-sol. Le spectre de fréquence des signaux émis et reçus est subdivise en plusieurs bandes et les composantes des signaux dans chacune des bandes sont réduits à des signaux élémentaires traduisant leurs changement de signe (bit de signe) et enregistrées. Or procède alors pour chaque capteur du système de réception, à une corrélation des signaux élémentaires associés respectivement aux signaux émis et reçus, à une sommations des produits de corrélation associés à chaque capteur, et l'on réalise avec les sommes obtenues, des coupes sismiques très comparables à ce que l'on obtiendrait en numérisant les signaux reçus en pleine précision, comme dans les méthodes classiques. Application à la prospection en 2D ou 3D autour d'un puits en cours de forage avec un outil de forage par exemple.: Seismic pulses distributed over time are transmitted irregularly (according to a random or pseudo-random code for example) and a direct reception system and those returned by discontinuities in the subsoil are captured by a reception system. The frequency spectrum of the transmitted and received signals is subdivided into several bands and the components of the signals in each of the bands are reduced to elementary signals translating their change of sign (sign bit) and recorded. However, for each sensor of the reception system, a correlation of the elementary signals associated respectively with the transmitted and received signals is carried out, a summation of the correlation products associated with each sensor, and seismic cuts are made with the sums obtained. very comparable to what one would obtain by digitizing the signals received in full precision, as in conventional methods. Application to prospecting in 2D or 3D around a well during drilling with a drilling tool for example.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9100608 | 1991-01-16 | ||
FR9100608A FR2671640A1 (en) | 1991-01-16 | 1991-01-16 | Method and device for exploring the subterrain, comprising the emission of a sequence of seismic pulses |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2059507A1 true CA2059507A1 (en) | 1992-07-17 |
CA2059507C CA2059507C (en) | 2001-11-27 |
Family
ID=9408856
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002059507A Expired - Fee Related CA2059507C (en) | 1991-01-16 | 1992-01-16 | Method and apparatus for exploring subsoil involving the emission of a series of seismic pulses |
Country Status (3)
Country | Link |
---|---|
US (1) | US5305285A (en) |
CA (1) | CA2059507C (en) |
FR (1) | FR2671640A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU692620B2 (en) * | 1994-12-08 | 1998-06-11 | Noranda Inc. | Method for real time location of deep boreholes while drilling |
FR2759172B1 (en) * | 1997-02-05 | 1999-03-05 | Inst Francais Du Petrole | METHOD FOR PROCESSING SEISMIC DATA OF ORIENTED MULTI-COMPONENT WELLS |
US20020159332A1 (en) * | 2000-10-10 | 2002-10-31 | Hans Thomann | Method for borehole measurement of formation properties |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3327805A (en) * | 1965-01-22 | 1967-06-27 | Exxon Production Research Co | System for processing seismic signals |
FR1583239A (en) * | 1968-06-21 | 1969-10-24 | ||
US3952280A (en) * | 1974-01-10 | 1976-04-20 | Esl Incorporated | Radiation monitoring of an object space with a clutter suppression technique |
FR2396316A1 (en) * | 1977-06-30 | 1979-01-26 | Elf Aquitaine | SEISMIC EXPLORATION METHOD |
US4346461A (en) * | 1980-02-01 | 1982-08-24 | Chevron Research Company | Seismic exploration using vibratory sources, sign-bit recording, and processing that maximizes the obtained subsurface information |
GB2133148A (en) * | 1982-11-30 | 1984-07-18 | Seismograph Service | Vertical seismic profiling |
US4543632A (en) * | 1983-01-10 | 1985-09-24 | Chevron Research Company | Robust estimation method for determining when subsequent data processing can include sign-bit representations of full-waveform seismic traces |
US4926391A (en) * | 1986-12-30 | 1990-05-15 | Gas Research Institute, Inc. | Signal processing to enable utilization of a rig reference sensor with a drill bit seismic source |
EP0331585B1 (en) * | 1988-03-04 | 1993-12-29 | Societe De Prospection Electrique Schlumberger | Method for deconvolution of unknown source signatures from unknown waveform data |
-
1991
- 1991-01-16 FR FR9100608A patent/FR2671640A1/en active Granted
-
1992
- 1992-01-16 CA CA002059507A patent/CA2059507C/en not_active Expired - Fee Related
-
1993
- 1993-04-14 US US08/046,921 patent/US5305285A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US5305285A (en) | 1994-04-19 |
FR2671640A1 (en) | 1992-07-17 |
CA2059507C (en) | 2001-11-27 |
FR2671640B1 (en) | 1994-12-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |